A device is provided which is usable to draw at least one web of material or at least one web strand, that includes several webs of material, into a folding apparatus. The folding apparatus includes at least an upper structure, at least one folding funnel and a cross cutting device for separating the web of material, which has been transported in the upper structure and folded on the folding funnel, into individual products. At least one guide rail is provided. A holding part with a guiding end of at least one web of material fixed thereto, is displaceably guided on a path of web travel of the web through the upper structure. At least one guide rail is provided along the folding funnel.
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1. A web draw-in device comprising:
a web folding apparatus including a superstructure;
at least one former located in said web folding apparatus after, in a direction of paper web travel, said superstructure;
a transverse cutting device adapted to transversely cut webs of material transported in said superstructure and folded at said former, said transverse cutting device being located after, in said direction of web travel, said at least one former;
at least one guide rail adapted to receive paper web leading end holding devices and being usable to guide said paper web leading end holding devices along a route of travel of the webs of material in said web folding apparatus to draw in the webs of material through said web folding apparatus, said guide rail extending through said superstructure, past said former and, in said direction of web travel, to at least an inlet to said transverse cutting device; and
at least one twisted guide rail section in said guide rail, said at least one twisted guide rail section in said guide rail being located adjacent said at least one former.
42. A method for drawing in at least one web of material including:
providing a roll changer supporting a first web of material;
providing a folding apparatus including a superstructure, at least one former located in a direction of web travel after said superstructure, and a transverse cutting device usable for separating webs of material transported through said superstructure and located at said former, into individual products;
locating said transverse cutting device in said folding apparatus after, in said direction of web travel, said at least one former;
providing a guide rail;
providing displaceable paper web leading end holding devices in said guide rail;
providing at least one twisted guide rail section in said guide rail;
locating said guide rail extending from said roll changer through at least one printing group and through said folding apparatus;
locating said at least one twisted guide rail section adjacent said at least one former in said folding apparatus;
fastening a leading end of a first web of material to one of said holding devices at said roll changer;
using said holding device for transporting said leading end of said first web of material from said roll changer through said at least one printing group, over said at least one former and at least to an inlet to said transverse cutting device; and
separating said leading end of said first web from said holding device after transporting said leading end of said first web of material to said transverse cutting device.
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This patent application is the U.S. national phase, under 35 USC 371, of PCT/EP2005/051207, filed Mar. 16, 2005; published as WO 2005/092614 A2 and A3 on Oct. 6, 2005 and claiming priority to DE 10 2004 015 479.1, filed Mar. 26, 2004, and to DE 10 2004 033 036.0, filed Jul. 7, 2004, the disclosures of which are expressly incorporated herein by reference.
The present invention is directed to devices and to methods for drawing in at least one web of material, or at least one continuous web, into a folding apparatus. At least one guide rail and on which a web leading end holding device travels, is provided. The holding device is displaceably guided through the superstructure of the folding apparatus along a route of web travel.
A folding apparatus is known from WO 00/56652 A1. This folding apparatus is comprised of a superstructure, in which paper webs, which are fed in from one or from several printing groups, are brought together, perhaps after having been longitudinally cut and are placed on top of each other. The folding apparatus also consists of at least one former, in which a continuous strand of one web or of several brought-together paper webs is longitudinally folded in the superstructure. A transverse cutting device, in which the longitudinally folded web is cut into individual products, is also provided in the folding apparatus. Often, the transverse cutting device is realized by the provision of a rotating cutter cylinder, whose cutters work together with a thrust element on a gripper or folding blade cylinder, for severing the continuous web. The grippers of this gripper or folding blade cylinder maintain the products, which have been cut apart by the transverse cutting device, fixed to the surface of the cylinder and convey them to a transfer gap between the folding blade cylinder and a folding jaw cylinder. A folding blade then extends out of the folding blade cylinder to introduce the product held on the folding blade cylinder along a center transverse line into a folding jaw of the folding jaw cylinder and to fold it transversely in this way.
To draw a paper web, for the first time, into a printing press, it is known, from EP 0 553 740 B1, to use a holding element in the form of a rail-guided chain link element. A leading edge of the web, which is to be drawn in, and which has been torn off obliquely, is fastened to this chain link element. The guide rail extends next to the intended path of the web through the printing press as far as the superstructure of a folding apparatus.
The web is taken over by a draw-in device which is in the form of two spike-covered belts, as is described in connection with the already mentioned WO 00/56652 A1. The spikes of the belt spear the web along its lateral edges and pull it over an insertion roller at the upper edge of the former, as well as over the former itself.
Since pulling elements, which are independent of the guide rail and of the holding element conducted on it, are provided on the former, it is accomplished that, in accordance with the respective width of the webs to be processed, the former can be displaced in such a way that a web, which was folded on the former, enters the transverse cutting device exactly in the center. This is of importance for an interference-free functioning of the transverse cutting device, and, in particular, for the proper functioning of a downstream-connected transverse folding device.
DE 42 10 190 A1 discloses a cutting device with an integrated shunt. This device is arranged between draw-in rollers and folding cylinders.
DE 101 28 821 shows a device for bringing paper webs together in the course of their being drawn in.
U.S. Pat. No. 3,125,335 discloses a device for drawing in webs of material by the use of of belts.
EP 0 418 903 A2 describes devices which can be used for drawing in a plurality of web into a rotary web-fed printing press. Tapes that draw in the webs extend from the roll changers to the front of the formers.
A device for producing cut items is known from DE 1 611 283A. Two cutting cylinders are arranged one behind the other.
The object of the present invention is directed to providing devices and methods for drawing at least one web of material, or at least one continuous web, into a folding apparatus.
In accordance with the present invention, this object is attained by the provision of the folding apparatus with a superstructure, at least one former and a transverse cutting device. At least one guide rail is conducted along the former and has a curved section between a paper waste clipping device and an inlet of the transverse cutting device. The guide rail extends past the inlet of the transverse cutting device. The guide rail can extend from a roll changer into the former and can extend past the transverse cutting device. A plurality of guide elements can be provided.
The guide rail that is leading along the former can conduct the continuous web at least as far as directly to the transverse cutting device. On the far side of the transverse cutting device, such aids for the automated draw-in of the continuous web are no longer needed since no continuous web exists there anymore. Only individual products are present after the transverse cutting device.
To assure a matching orientation of the holding elements, with respect to the web of material held on it in, in the course of the passage of the web over the former, the guide rail is preferably twisted at the level of the former, preferably by approximately 90°.
To be able to adapt a former to the processing of continuous webs of various widths and to guide these various widths of webs, centered through the transverse cutting device and the transverse folding device, the former can preferably be shifted parallel with respect to the longitudinal axis of the transverse cutting device. So that the guide rail can follow such a shifting movement of the former, a section of the guide rail, which is located upstream of the former, in the running direction of the continuous web, should be stretchable or extendable.
In order to assure the precise feeding of the continuous web to the transverse cutting device, independently of the respective shifting of the former, an articulated section in the guide rail should be provided between the inlet of the former and the transverse cutting device.
The articulated section can be provided in a simple manner by the provision of one or of several cuts in the guide rail. This, in particular, permits a one-piece configuration of the guide rail over the articulated section.
The guide rail preferably has a groove, and in particular has a longitudinal groove, with a bottom and with two lateral walls, and in which groove the holding element is guided. The cuts sever one of the lateral walls and the bottom, respectively. The remaining uncut lateral wall can be bent comparatively easily.
In accordance with a first preferred embodiment of the present invention, the guide rail is extended past the transverse cutting device. A continuous web can be pulled through the transverse cutting device with the aid of a holding element which is guided by the guide rail. In that case, the transverse cutting device must be in an open position during the draw-in of all of the webs of material of the continuous web or strand. Only after the webs of material have been completely drawn in, can the transverse cutting device be put into operation to cut off the white paper waste, which constitutes the leading section of the continuous web.
It is alternatively possible, in accordance with the present invention, to provide a clipping device for use in severing the white paper waste, located at the front of the web, from the remainder of continuous web. An inlet of the transverse cutting device is arranged in an extension of the direction of the passage of the continuous web, which is provided by the clipping device. Following the severing of the white paper waste, the usable portion of the continuous web enters the transverse cutting device without requiring guidance by the guide rail.
To make such an introduction of the now clipped continuous web into the transverse cutting device simple and dependable, the inlet of the latter is preferably arranged vertically underneath the clipping device. The tip or start of the web of the usable portion of the continuous web is guided by gravity into the inlet of the transverse cutting device.
In this preferred embodiment of the folding apparatus in accordance with the present invention, the guide rail preferably has a bend located between the clipping device and the inlet of the transverse cutting device and runs past the inlet of the transverse cutting device. This construction of the guide rail makes it possible to let the transverse cutting device, and the portions of the folding apparatus following it, to start up simultaneously with the starting up of the upstream portions of the folding apparatus or of the entire printing press. This can be done even before the webs of material to be drawn in have reached the transverse cutting device. The time between the start of the draw-in process and the reaching of steady state operating conditions is shortened. Therefore, the amount of start-up waste is reduced.
A storage device for use in receiving holding elements, is arranged in an extension of the guide rail on the down stream side of the former. This allows the rapid draw-in of several webs of material, one after the other, during the draw-in process, without it being necessary for the holding element of a first web or strand of material to be moved back to its initial point in order to free the guide rail for facilitating the passage of the holding element of a further web or strand of material.
In a particularly space-saving manner, the storage device in accordance with the present invention can be constituted by a spherically-shaped or a helically-shaped rail element. This storage device is capable of receiving one holding element or several holding elements one behind the other and does not require the use of a large amount of space.
A separating device, for use in separating the holding elements from their respective webs of material, is appropriately provided upstream of the storage element. The leading sections of the webs of material, which are carried along by the holding elements, need not also be received in the storage device.
If the guide rail is bent past the inlet of the transverse cutting device, the separating device for separating the holding elements from the webs is suitably arranged on the guide rail between the bend and the storage device.
A guide rail can extend continuously from a roll changer of a printing group, which is situated upstream of the folding apparatus, as far as into the folding apparatus.
In order to be able to process several webs of material in a bundle, the superstructure of the folding apparatus preferably has several routes, on each of which routes respectively at least one web of material can be conducted through the superstructure and to the transverse cutting device. The several rail elements which extend along each of these routes are united with the guide rail upstream of the transverse cutting device.
To correctly guide the holding elements of the several webs of material at the junctions, and in particular if the holding elements are being returned after the webs of material have been drawn in, a shunt is preferably arranged at each of the respective junction points of the rail elements.
A glue-preparation device is preferably arranged upstream of a junction, on at least one of the routes. Such a glue-preparation device is used to make a continuous web, passing the glue-preparation device, locally sticky, so that the now sticky web portion adheres to a second, already drawn in continuous web at the junction.
The glue-preparation device can be an adhesive tape dispenser for use in dispensing a two-sided adhesive tape. Alternatively, it can be a glue dispenser.
In order to activate the glue-preparation device at the right time, a sensor, which is usable for detecting the gripping of the start of a passing web, is preferably assigned to the glue-preparation device.
The drawing-in of webs of material into a folding apparatus as described above preferably comprises the following steps:
In this connection, it should be specifically noted that it is not necessary to stop a web of material between these various steps. Instead, all of the webs of material are preferably continuously moved from the start of the draw-in procedure until they reach the transverse cutting device.
The draw-in of the various webs of material is preferably synchronized in such a way that the second web of material is guided to the junction only after the holding element of the first web of material has gone past this location. Therefore, the first web of material holding element does not hamper the movement of the holding element of the second web of material.
A draw-in method is also within the scope of the present invention in which a first web of material is initially conducted on the guide rail to a location at which one of the rail elements joins the guide rail. Once the holding element has gone past this location, a second web of material is conducted to this location and from there is conducted along the guide rail on to the transverse cutting device.
The webs of material can be conducted through the transverse cutting device. The transverse cutting device remains at rest until all of the webs of material have been pulled through it, so that no holding element is damaged by operation of the transverse cutting device. In an alternate embodiment, it is possible for the webs of material to be conducted through a clipping device that is located upstream of the transverse cutting device and then past the transverse cutting device with the aid of the guide rail. The clipping device is activated only after all of the tips, which are grasped by the holding elements, have moved past the clipping device in order to clip the continuous web of material and to permit the leading edge, which is being formed in the course of such clipping, to enter the transverse cutting device.
If the transverse cutting device is also moved along in the correct phase during the draw-in procedure, it can correctly separate the continuous web or strand into products the moment the web or strand begins to enter the transverse cutting device.
To further shorten the start-up process of the folding apparatus, or of a printing press containing the folding apparatus, and to reduce the amount of start-up waste, a pair of draw-in rollers of the printing press or of the folding apparatus are preferably initially disengaged. However, as soon as the passage of the leading edge of the web of material or of the continuous material through the pair of draw-in rollers is detected. The pair of draw-in rollers are brought into engagement and are driven in a controlled manner. A tractive force, which is exerted by the pair of draw-in rollers, approaches a desired value which is provided for continuous printing operations.
Preferred embodiments of the present invention are represented in the drawings and will be described in greater detail in what follows.
Shown are in:
A schematic side elevation view of a folding apparatus, in accordance with the present invention, is shown in
The former 08 and the compensation rollers 07 are movable in a lateral direction in
Starting at an outlet of the former 08, the paper web 01 now runs downward through a transverse cutting device 24 and through a transverse folding device which has a construction that is generally known, and which thus need not be explained in greater detail here. A guide rail 09, which is represented in
The guide rail 09 may have a U-shaped or, as represented in
The single-segmented links 52 of the chain element 51 are elastic in themselves. For example, they may be made in one piece of an elastic material, or they may have an elastic center element, which is not specifically represented in
Motors, which are not specifically represented are attached at regular intervals to the guide rail 09. Each of these motors supports a chain wheel which engages the chain element 51 through a gap in the side of the guide rail 09 in its groove 23, and specifically between the links 52, 53. The length of the chain element 51 is selected to be slightly greater than the distance between two successive chain wheels along the guide rail 09. It is thereby assured that, in the course of conveying the chain element 51 along the guide rail 09, at least one chain wheel is always in engagement with the chain element 51 and drives it. To draw in a paper web 01, it is therefore sufficient to fasten the leading edge 54 of the paper web 01 on the respective arm 19 of a chain element 51, which arm 19 is projecting from the groove 23, and to then put the chain element 51 into motion along the guide rail 09 in order to draw in the paper web 01.
In an enlarged representation of a portion of
The glue-preparation device 16 can also consist of a plurality of spray nozzles for dispensing a spray adhesive. These nozzles are distributed over the width of the paper web 01. A photo-cell 14 is assigned to each such spray nozzle to cause one of the adhesive spray nozzles to spray a dose of adhesive onto the paper web 01 at the moment when the leading edge of a paper web 01 moves past one of the adhesive spray nozzles. This can be seen in particular in
The time at which a paper web 01, which is being conducted along the further rail element 12, arrives at the junction roller 11 has been selected so that at this time, a chain element 51, which has already drawn in the paper web 01 and which runs along the guide rail 09, 13, has moved past the junction roller 11. The chain element 51, which is coming from the further rail element 12, can then be changed onto, or switched onto the guide rail 09, and can be further conveyed on it.
As soon as a first chain element 51, with its first paper web 01, has completely moved past the junction roller 11, a further, or second, paper web 01 can be fed, in a corresponding manner, via the rail element 09, 13 and can be glued to the first paper webs 01, which is already running over the junction roller 11.
The continuous web or web strand that is obtained in this way, moves past a separating device 17, such as, for example, a hopper separating device 17 having a rotating cutter and a counter-support roller. Such a separating device 17 is used to sever the connection between the arm 19 of the draw-in chain 51 and the tip 54 of the paper web 01, which is no longer needed at this place. The hopper separating device 17 is used on all of the paper webs passing through it, whose leading ends have already been glued to a paper web 01 which has been drawn in farther than they are. In particular, the hopper separating device 17 is used with paper webs 01 fed in via the further rail elements 12, 13.
The direction of travel the continuous web or web strand 01 is again changed at a former inlet roller 18 and arrives on the sloping surface of the former 08, which sloping surface tapers downward. As the continuous web or web strand 01 is drawn over the lateral edges of the former 08, its orientation changes from an orientation upstream of the former inlet roller 18, which is a substantially perpendicular orientation, in respect to the plane of
The further course, or direction, of the guide rail 09 can be better observed by referring to
An advantageous embodiment of the chain element 51 is represented in
It is also possible to embody the pin 22 with different diameters in its longitudinal direction, and in particular to make the pin 22 crowned, as is also shown in
Two further junction points 29, 31 are shown in
A separating device 30, which corresponds in form and function to the hopper separating device 17, and which may be, for example, a folding and separating device 30, is arranged on the guide rail 09. One such separating device 30 is located both shortly upstream, and shortly downstream of the transverse cutting device 24. The front or upstream folding and separating device 30 is used for separating the continuous webs or web strands 01 supplied via the further rail elements 32, 33 from their respective holding elements. The rear or downstream one of the folding and separating devices 30 separates the paper web 01, which has been drawn in first and which constitutes the tip of the continuous web or web strand 01 entering the transverse cutting device 24, from its holding element.
After all of the paper webs 01 have been drawn in through the transverse cutting device 24, the transverse cutting device 24 can be put into operation. The tips of all of paper webs 01 of the drawn-through continuous web or web strand 01 are cut off in the first cut of the transverse cutting device 24.
At a time which is no later than the time when all of the holding elements have been released from their respective paper webs 01, a start is made to pull them back to their respective original locations over the guide rail 09, or along the further rail elements 12, 13, 32, 33. To assure that exactly one holding element is returned to each original location, shunts 34 are provided at the respective junction locations. Settings of these shunts 3A are automatically controlled in order to return each holding element to its assigned original location.
In a view which is analogous to
With this embodiment of the present invention, as depicted in
In order to reduce this amount of paper waste even more, it is possible to provide sensors at pairs of draw-in rollers through which a paper web 01 runs on the way from the roll changer to the transverse cutting device 24 and which draw-in rollers are moved away from each other during the draw-in of the paper web 01. These sensors may be photo-cells 14 which are usable for detecting the presence of the paper web 01 which sensors 14, as soon as they detect the passage of a paper web 01 through the pair of draw-in rollers, cause the draw-in rollers to be placed against each other and to be driven to produce a predetermined tractive force on the respective paper web 01. In this way, it is possible, in the course of drawing in the paper web 01, to start with the matching of a tractive force exerted on the paper web 01 to values desired for steady state printing operations, by the use of which, the time required for reaching these steady state conditions is also shortened.
If it is intended to process several paper webs 01 of different widths in the folding apparatus, it is important, for the insurance of trouble-free operations, that these different width paper webs 01 all run through the center of the transverse cutting device 24 and the subsequent transverse folding device. The displaceability of the former 08, as previously mentioned in connection with
A preferred embodiment of such a flexible guide rail 09 in accordance with the present invention will be explained with the use of
A configuration of the guide rail 09, in which its section located above the flexible area 44, 46 is bent toward the left, is shown as a dotted outline in
In an advantageous embodiment of the present invention, and during the web draw-in process, a distance X of the guide rail 09 from the paper web 01, as seen in
The draw-in process preferably takes place through the printing groups, which are assigned to the web path, while those printing groups are not in a print mode.
While preferred embodiments of devices and methods for drawing at least one web of material or at least one web strand into a folding apparatus, in accordance with the present invention, have been set forth fully and completely hereinabove, it will be apparent to one of skill in the art that various changes in, for example the specific structure of the printing press, the types of motors used, and the like could be made without departing from the true spirit and scope of the present invention which is accordingly to be limited only by the appended claims.
Hartmann, Manfred Wolfgang, Beck, Peter Franz, Metz, Mathias Alexander
Patent | Priority | Assignee | Title |
7721647, | Jan 15 2007 | MAN Roland Druckmaschinen AG | Apparatus and method for cleaning a webbing-up device in a printing press |
7922642, | Sep 21 2005 | Koenig & Bauer Aktiengesellschaft | Devices and method for feeding at least one material web or web strand into a folding device |
9849552, | Jun 19 2012 | Georg Fischer Wavin AG | Apparatus for guiding tube processing devices |
Patent | Priority | Assignee | Title |
3125335, | |||
3544454, | |||
4819557, | Aug 03 1987 | MAN Roland Druckmaschinen AG | Flexibly coupled roller chain for threading a substrate web in a rotary web printing machine |
5052295, | Sep 20 1989 | Kabushiki Kaisha Tokyo Kikai Seisakusho | Paper web threading apparatus for rotary printing press |
5263414, | Jan 31 1992 | Koenig & Bauer Aktiengesellschaft | Material web guide assembly |
5312488, | Sep 25 1990 | Albert-Frankenthal Aktiengesellschaft | Cross gluing cylinder |
5461851, | Jul 09 1993 | Koenig & Bauer Aktiengesellschaft | Roller chain |
5699735, | Oct 04 1994 | Maschinenfabrik Wifag | Web-fed rotary press |
6269751, | May 02 1997 | Koenig & Bauer Aktiengesellschaft | Length-variable sliding rail element for a roller chain |
6705499, | Mar 19 1999 | Koenig & Bauer Aktiengesellschaft | Rollers for guiding paper webs |
6821240, | Mar 19 1999 | Koenig & Bauer Aktiengesellschaft | Longitudinal folding device |
6929710, | Mar 19 1999 | Koenig & Bauer Aktiengesellschaft | Method and device for winding up at least one paper web |
7066368, | Mar 19 1999 | Koenig & Bauer Aktiengesellschaft | Paper web draw-in device for a web-fed printing press |
DE10128821, | |||
DE1611283, | |||
DE4210190, | |||
EP302256, | |||
EP418903, | |||
EP477769, | |||
EP553740, | |||
EP979170, | |||
EP1169252, | |||
EP1334940, | |||
WO56652, |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Mar 16 2005 | Koenig & Bauer Aktiengesellschaft | (assignment on the face of the patent) | / | |||
Aug 04 2006 | BECK, PETER FRANZ | Koenig & Bauer Aktiengesellschaft | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 018399 | /0458 | |
Aug 08 2006 | METZ, MATHIAS ALEXANDER | Koenig & Bauer Aktiengesellschaft | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 018399 | /0458 | |
Sep 21 2006 | HARTMANN, MANFRED WOLFGANG | Koenig & Bauer Aktiengesellschaft | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 018399 | /0458 |
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